(infra): update tags in CI to make use of M1 runners for iOS builds

Ticket(s) / Related Merge Requests

N/A

Summary of Changes

This MR updates the iOS builds to use the M1-based GitLab runners rather than the existing AMD64 machines.

• Changelog file updated with this template (one or more)
  • Added for new features.
  • Changed for changes in existing functionality.
  • Deprecated for soon-to-be removed features.
  • Removed for now removed features.
  • Fixed for any bug fixes.
  • Security in case of vulnerabilities.

Testing Considerations

This should impact iOS builds, which have passed successfully for this MR (production builds not yet tested).

Regression Scope

There should be no regression scope at the application level, this change only affects builds.

Platform Affected (web, mobile, etc)

Mobile

Developer Testing Completed

Tested building using the M1 runner (see the pipeline attached to the MR below).

Screenshots

Does this impact

• Localization
• Dark/light mode
• Guest mode